VELOCITY OF ELASTIC WAVES IN GRANITE 63 
The values obtained for these constants are: 
w#=16.3+0.4 X10! dynes/cm? 
A=33+1X10! dynes/cm? 
k=44+1 X10" dynes/cm? 
B=2.28+0.05 X10-” cm?/dynes 
o =0.333 + 0.005 
E=43+1 X10! dynes/cm?. 
VI. Rocxrort REsutts 
Specimen records from Rockport are reproduced in Fig. 3 and the time- 
distance graph is shown in Fig. 5. 


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Fig. 4. Specimen Rockport records, vertical component. 

The velocity for longitudinal waves obtained from these data was 16,670 
+40 ft./sec. or 5.08 + 0.01 km/sec. 
207 
